Answer:
Step-by-step explanation:
Using the Z theorem for Parallel lines
A = 66 (trace out the Z -- in this case it is backwards)
U = 54 again the Z theorem is used.
N is part of the straight line so
N + U + 66 = 180
N +54 + 66 = 180
N + 120 = 180 Subtract 120 from both sides
N = 180 - 120
N = 60
L + 54 make up a straight angle so L + 54 = 180
L+54 = 180 Straight angles are 180 degrees. Subtract 54
L+54-54 = 180 - 54
L = 126
L = 126
U = 54
N = 60
A = 66